Photo of 'single mom' receipt goes viral

A photo of a receipt from a restaurant posted on a blogger site has spread across the Internet on Thursday after a "single mom" didn't leave a tip on her $138 tab, the Huffington Post reports.

The receipt shows a charge for $138.35 and instead of leaving a tip, the note reads "single mom sorry," possibly implying the person didn't have enough money for a tip. The picture was originally posted to Reddit.